Oxidizing means for solutions.



No. 877,445. PATENTED JAN. 21, 1908.

W. B. MoPHBRSON. OXIDIZING MEANS FOR SOLUTIONS.

APPLICATION FILED FEB. 7, 1907.

The/507a.

' at Los Angeles,

, thro I WILLIAM B. MoIHERSON, OF LOS ANGELES,

EXTRACTING COMPANY, OF LOS ANGELES, CALIFORNIA, A

UNIT D STATES P ATENT OFFICE.

. FORNIA.

CALIFORNIA, ASSIGNOR TO NON ACID COIPER CORPORATION OF CALI- OXIDIZING MEANS FOR SOLC'TIONS.

To all whom it may concern:

Be it known that I, WILLIAM B. MCPHER- SON, a'citizen of the United States, residing in the county of Los Angeles and State of California, have invented a new and useful Oxidizing Means for Solutions, of which the following is a specification. This invention relates to means for oxidizing solution, use in oxidation of iron solutions used in co er leaching and separating processes.

. e main ob ect of the invention is to produce the oxidation in a convenient, economical and rapid manner.

1 Another object of the invention is to obviate the use of high pressure air supply, such as is required when the oxidizing air is blown h the solution;

In t e accompanying "drawings: Figure 1 is a vertical section of the apparatus. Fig. 2 is a plan thereof.

1 designates a tank which may be of circular or any other suitable form and may be of any suitable material adapted to resist the action of solution therein contained. The solution in the tank is assumed to rise to about the level indicated by the line :r-w. At 2 and 3 are designated inlet and outlet means or pipes for supplying the solution and drawin it from the tank as desired. It

.will be un erstood, however, that any suitable means ma be used for this p ose. Above the solution lin'e :c-a: are provi ed a plurality of intercepters or erforate artitions formed, for example, of cards 4 p aced across the tank between the supporting means 5 on the sides of the tank, said boards having perforations 6 distributed through- .board will fall on the top out the same, these perforations being staggered, oflset or alternately arranged in successive partitions, so that the fluid passing down through the erforations in" any one t e unperforated portion on the board below and will have to flow along the same before it. can again descend thro h the fiperforations therein. At the top 0 the ta are provided means for supplying the solution or fluid thereto in a distributed manner, said means consisting, for example, of a trough 8 extendinglcrosswise of of the tank and disc arging into lateral troughs 9 extending transversely thereto, the edges of said extensions being notched as at 10 to permit the fluid to flow Specification of Letters Patent. Applioation flled February 7.1907. Serial Ho. 856.291.

and is particularly intended for Patented Jan. 21, 1908.

over the said edges in distributed streams on to the u permost intercepter 4. Means are rovide for circulating the fluid from the ower part of the tank to this distributer, said means consisting, for example, of a pipe 11 connected to a jet pump or ejector 12 having a lateral inlet 13 opemng from the bottom portion of the tank and having a steam inlet 14 whereby steam supplied to said inlet will draw the fluid into the pipe 11 and force it to the top of the tank, t e fluid passing from the said pi e into the distributer trough 8. Below the owermost of the intercepters or partition means 4 is rovided means for supplying air throu h t e tank, for which purpose the side wa l of the tank has a number of holes 16 extending upwardly and out wardly to communicate with a' trunk or airbox 17 surrounding the 'tank. Into this trunk opens the air supply pipe 18 leading from an air chamber 19 of a hot air furnace 20, the said air chamber being supplied from the outer air by a fan or blower 21.

22 designates the stack of the furnace. Means may also be provided for heating the solution in the tank, for exam le, a'pi pe or coil 23 connected to a supply 0 either hve or exhaust steam.

The operation is as follows -Fluid or solution having been supplied to the tank by the means 2 is continually circulated by the pump 12 which forces the fluid from the ower part of the tank up to the distributer,

whence it flows in streams on to the uppermost intercepter or partition, running throu h the holesin said intercepter down on to t e second intercepter or partition and so on. Said holes are of suflicient size to enable the fluid to run down the edges of the holes without clogging the holes. At the same time the air supply means is operated, forcing a current of air through the heateror hot air furnace into the aintrunk 17, the air passin thence through the holes 16 into the tan space above the solution and below the lowermost interce ter or partition, whence the air flows upwar ly through the perforations 6 in the successive intercepters or partitions and passes out at the top. In thus passing in contact with the solution distributed over a large surface, oxidation is secured with much eater rapidit than can be obtained by lowing throug the solution, on account of the much greater surface exposed. The

heating of the air supply conduces to the action, and furnishes the requisite heat in the most convenient manner.

What I claim isF- i 1. An apparatus for oxidizing solutions, comprising a tank, a plurality of intercepter partitions extending across the tank, said partitions having perforations which are offset in successive 1partitions, means for supplying solution a ove the uppermost partitionand passing air into the tank below the partitions, nd means forwithdrawing the solution to aintain the level of the solution at a point below the lowermost partition and below the air supply whereby the air is caused to pass upwardly through the parti tions, in contact with the solution thereon.

2. An apparatus for oxidizing solutions, comprising a tank, a pluralit of perforated partitions extending across t e tank, a distributer at the top of the tank, over the uppermost 'artition, means for-furnishing liquid from t e bottom part of the tank to said distributer, and means for forcing air into the tank below the said partitions, whereby the airis caused to pass u wardly through the partitions ,in contact wit the solution therein.

3. An apparatus for oxidizin solutions, comprising a tank, a plurality of perforated partitions extending across the tank, a distributer at the top of the tank, over the uppermost partition, means for furnishingliquid from the bottom part of thetank to said distributer, and means for forcing heated air into the tank below the .said partitions,

whereby the air is caused to pass upwardly through the partitions, in contact with the solution therein. v

4. An apparatus for. oxidizing com rising a tank, a pluralit o perforated 'partltions extending across t e tank, a distributer at the top of the tank, over the uppermost partition, means for furnishing liquid from the bottom part of the tank to said distributer, means for forcing heated air into the tank below the said partitions, whereby solutions,

the air is caused topass upwardly through 1 the partitions, in contact withvthe solution therein, and meansfor heating the solution in the tank.

In testimony whereof, I have hereunto set my hand atLos Angeles California this'2 5th day of January 19-07. V L

I WlLLIAM-B McPHER SONf Y i In presen.ce of- ARTHUR P. KNIGHT, FRANK L. A. GRAHAMQ 

